A study of the Mg II K line in Beta Persei

Details A study of the Mg II K line in Beta Persei A study of the Mg II K line in Beta Persei

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..258c&link_type=abstract

Astronomical Journal, vol. 86, Feb. 1981, p. 258-263. NASA-NSF-supported research.

Astronomy and Astrophysics

Astronomy

8

Astronomical Models, Eclipsing Binary Stars, Line Spectra, Magnesium, Stellar Envelopes, Stellar Spectrophotometry, Doppler Effect, Limb Darkening, Mathematical Models, Radio Sources (Astronomy), Red Shift, Stellar Rotation, Stellar Temperature, X Ray Sources

Scientific paper

Spectral scans of the Mg II k line in Beta Per were obtained with Copernicus during two primary eclipses. A brief description of observation in a short frame mode is given. The observed data are compared with computed line profiles based on the eclipse geometry of spherical stars. It is shown that a nonuniform circumstellar envelope, or cloud, probably is present. In one scan, a red-shifted line of P Cygni-type profile appeared, indicating the occurrence of an unusual event in the close binary system.

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